The link to my Espresso Coffee Snobs post is in the article where the writer says "But it’s actually a little more complicated and pretentious) than that."

(c) John Corney
True flat whites look like this

I guess I'm going to have to go to Starbucks to see how they do with their flat whites, but I know already that it really can't be a true flat white if you can get it tall, vente, or grande. As any of my devoted coffee snob devotees will tell you, one of the key things about a flat white is that the espresso is not to be overwhelmed by milk. If you do want to try one at Starbucks just to see, then I recommend you get a "tall" (small), but even that is going to have too much milk in it. In my opinion, Starbucks is just trying to ride the flat white wave that is encircling the globe.